Finding the Fourth Proportional to 9,439.72, 14,105.16 and 7,205.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,439.72 : 14,105.16 = 7,205.72 : x
2. Step 2: Convert to fraction form
   9,439.72/14,105.16 = 7,205.72/x
3. Step 3: Cross multiply
   9,439.72x = 14,105.16 × 7,205.72
4. Step 4: Simplify right side
   9,439.72x = 101,637,833.52
5. Step 5: Solve for x
   x = 101,637,833.52/9,439.72
6. Step 6: Final answer
   x = 10,767.04